William rosenkranz



(No Model.)

W. ROSENKRANZ. COMBINATION RULE.

No. 593,608. PatentedNov. 16, 1,897.

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UNITED STATES,

PATENT @Finca VILLIAM ROSENKRANZ, OF NEW YQRK, N. Y.

COMBINATION-RULE.

SPECIFICATION forming part of Letters Patent No. 593,698, dated November 16, 1897. Application med my 9,1597. serial No. 643,994. oro model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM RosnNK'RANz, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Rules, of which the following is a full and complete speciiication, such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to rules, and the object thereof is to provide a device of this class which may also be used as a compass, a level, and tracer. v

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which- Figure lis a side View of my improvedrule Fig. 2, a sectional edge view thereof; and Fig.

3, a view similar to Fig. 2, showing a part of the construction in section.

In the drawings forming part of this specification the separate parts of my improvement are designated by the same numerals of reference in each of the views, and in the praetice of my invention I provide a rule which consists of two separate parts 5 and 6, which are provided with the usual scales, as clearly shown in Fig. 1, and said separate parts of the rule are hinged together at one end in the usual manner.

In hinging the separate parts of the rule together, as above described, I secure to each part a circular jaw 7, through which is passed a screw or bolt 8, which is provided on one side with a thumb-nut 9, and mounted on said screw or bolt between the separate jaws 7 is a toothed wheel 10, which is adapted to serve as a tracer. I

The end of each part of the rule opposite the hinged connection of said parts is provided with a longitudinal plate 11, which is set thereinto and which is provided Wi th a longitudinal slot 13, and each plate is also provided with a longitudinal chamber 14, with which said slot'communicates, and mounted in |said chamber is a pin 15, to which is secured a screw I6, on which is mounted a thumb-nut 17, and by means of said screw 16 and said nut 17 the pin 14 may be moved outwardly and held at any desired point, the object of this construction being to adapt the device for use as a compass. e

Countersunk in one side or one part of the rule is an ordinary spirit-level 18, and by means of this construction I provide a rule which in general is of the usual form, but which is adapted t0 serve as a scriber, acompass, and a level.

The thumb-nut 9 is employed for the purpose of securing the separate parts 5 and G of the rule at any desired angle of separation, and whenever it is desired to use the rule as a compass the pins 15 are projected and secured at any desired point by means of the thumb-nut 17.

The operation will be readily understood by all those' familiar with this class of devices in View of the foregoing description and the accompanying drawings, and it will thus be seen that I accomplish the object of mydnvention by means of a device which is simple vin construction and operation and which is perfectly adapted to accomplish the result for which it is intended.

Having fully described my invention, I claim as new and desire to secure by Letters Patent- As an improved article of manufacture a rule comprising two parts 5 and 6 provided with scales, said parts being hinged together at one end by jaws '7, a shaft or bolt 8 mounted thereon, a thumb-nut 9 mounted on one end thereof, a toothed wheel lO mounted between said j aws and adapted to revolve on said shaft,

.a longitudinal plate l1 mounted in the outer 

